Seeing as the PM8 is no different to the DM9, think carefully before you decide. Value wise its a bit in his favour, but you don't need to pay shipping and atleast have the security of knowing the guy and seeing the gun.

This is a tough one. Usually I would prefer the Etek3 on the field, but the PM8 is just history. It's one of the best markers Dye has ever made. The ribbon eyes can be problematic if you're an idiot and don't know that you need to be careful when you open up your marker, but other than that they're fine. They won't break unless you break them. The eyepipe is actually the main cause of concern. When I had my PM8, I cracked my eyepipe because I screwed my barrel too far in and put pressure on it. Make sure the barrel you have has one of those o-rings on it and be careful the first time you screw it in so you don't crack the eyepipe. Once you get a feel for it, you don't have to worry. The only other drawback to a PM8 is that the trigger sucks. The stock UL trigger is terrible, but you can get an Ironmen Reach trigger for it without paying too much. Also, some people like to tune their markers so "perfectly" that any change causes them to turn into finicky puffers that suffer massive dropoff. I strongly recommend setting the dwell to the stock 17 and zeroing the lpr, then raising the LPR until it just chronos at a reasonably consistent FPS, then turn the dwell up to 24-25. Remember the PM8 has a bolt with two tail o-rings to seal the firing chamber, so the main problems are a loss of max ROF, but that's nothing compared to the consistency you get.

In all, would I do it? If I could get a better trigger, and tune it myself the way I wanted to, probably. If I couldn't get a different trigger and wasn't confident that I wouldn't break the sucker, then no.